Apparatus for generating and administering gases for general anæsthesia.



PATENTED MAY 7, 1907.

0; R. OUMMINS. APPARATUS FOR GENERATING AND ADMINISTERING GASES FOR GENERAL ANESTHESIA.

APPLICATION FILED FEB.23,1904.

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CLARENCE R. CUMMINS, OF ERIE, PENNSYLVANIA, ASSIGNOR OF ONE- IIALF TO F. FENNER FRITZ AND F. C. CANTER, OF ERIE, PENNSYLVANIA.

APPARATUS FOR GENERATING AND ADMINISTERING GASES FOR GENERAL AN/ESTHESIA.

Specification of Letters Patent.

Patented May '7, 1907.

Application filed February'23, 1904. Serial No- 194,891. l

1'0 (1,7,7 whmn it may concern:

Be it known that I, CLARENCE R. CUM- MINS, a citizen of the United States, residing at Erie, in the county of Erie and State of Pennsylvania, have invented new and useful Improvements in Apparatus for Generating and Administering Gases for General Anaesthesia, of which the following is a specification.

This invention relates to apparatuses for generating and administering gases for general anaesthesia, and consists in certain improvements in the construction thereof as will be hereinafter fully described and pointed out in the claims.

While the invention is applicable to use in generating or administering gases of various natures it is particularly adapted for generating and administering ethyl chlorid, and in the following description it is described as used with this material.

The invention is illustrated in the accompanying drawings as follows :-Figure 1 shows a section on the line 1-1 in Fig. 2. Fig. 2, a section on the line 22 in Fig. 1. Fig. 3 is a section through the neck of the generating receptacle, the view looking toward the top of the apparatus.

Ethyl chlorid in theliquld state 1s placed in the tube A. Extending from this tube is a coil B, and extending from the coil B is a flexible tube C ending in an inhaler D. A receiver C is ordinarily interposed in the tube C so as to take care of the breathing of the patient to whomgas is being administered.

The coils B are held in position by the plates B. The coils B and generator A are both preferably placed in a heating tank E to which water is supplied. The thermometer F indicates the heat of the water; the water gage G, the height of the water. The water is heated by some heating means, as a lamp H.

The coil B is preferably secured to the cover E which is removable so that when it is lifted the coil and generating tube A are lifted out with it. A lid E is arranged at the center of the cover. By lifting this lid the operating valve a is exposed. The tube A is connected with the coil by a joint a so that different tubes may be attached, the tube or generator being also in ordinary practice a container in which the liquid ethyl chlorid is furnished.

Ethyl chlorid forms a very desirable anesthetic but in the generation of the gas from the liquid intense cold is produced, the gas itself as generated being ordinarily below Zero, Fahrenheit. It is of course apparent that if gas is administered at this low temperature undesirable effects on the patient may be expected. One of the purposes of this invention is to make possible the ad ministration of such gases without this un desirable effect. In the apparatus shown the generator is warmed to generate the gas, and the gas is heated in the same chamber. With this apparatus the gas after it is generated passing through the coil B is heated preferably to about the temperature of the surrounding atmosphere and can then be administered and be free from the objection that is present where it is administered at the very low temperature that follows the generation of the gas without the heating apparatus. This apparatus also very material] y reduces the cost of administering such gases in that gas suflicient to put the patient under its influence can be produced and administered at the trifling cost of not to exceed five cents as compared with the usual cost of administering such gases of from twenty-five to fifty cents.

What I claim as new is 1. In an apparatus for generating and administering gases for general anaesthesia, the combination of a generating receptacle; a heating receptacle communicating with the generating receptacle; means for heating both receptacles; and an inhaler connected with the heating receptacle by which the gas is generated, heated and administered.

2. In an apparatus for generating and administering gases for general anaesthesia, the combination of a generating receptacle; a heating receptacle removably connected with the generating receptacle; means for heating said heating receptacle; and an inhaler connected with the heating receptacle by which the gas is generated, heated and administered.

3. In an apparatus for generating and administering gases for general anaesthesia, the combination of a generating receptacle; a heating receptacle communicating with the generating receptacle; a heating chamber in which both of said receptacles are arranged;

, and an inhaler connected with said heating receptacle by. which the gas is generated, heated and administered.

4. In an apparatus for generating and administering gases for general anaesthesia, the combination of a generating tube; a heating coil connected with said tube and arranged around the same; a heating chamber in which said tube and coils are arranged; and an inhaler connected with said heating coils.

5. In an apparatus for generatin and administering gases for general anaest esia, the combination of the tube A having the controlling valve 60 and joint (1; the coil B connected with said tube; the tube 0 connected with the tube B; the inhaler D on said tube I 5 C; the chamber E in Which the tube A and coil B are arranged; and means for heating the chamber E.

In testimony whereof I have hereunto set my handin the presence of two subscribing 20 witnesses.

CLARENCE R. OUMMINS.

Witnesses:

M. O. SULLIVAN, J. R. CRAIG. 

